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Difference between @import and link in CSS
...a 1000 page website and we link to a CSS file from every page on the site. Now let's imagine we want to add a second CSS file to all of those pages. We could edit all 1000 HTML files and add a second CSS link or a much better way would be to import the second CSS file from within the first file. We ...
Is std::vector copying the objects with a push_back?
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I would also note that, if you use raw pointers, you are now responsible for cleaning up after them. There's no good reason to do this (not one I can think of anyway), you should always use a smart pointer.
– Ed S.
Nov 2 '12 at 0:03
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Remove folder and its contents from git/GitHub's history
...Y_NAME # i.e. 'node_modules' in other examples
git reflog expire --expire=now --all && git gc --prune=now --aggressive
git push --mirror https://project/new-repository
If you want to delete files then use the delete-files option instead:
java -jar bfg.jar --delete-files *.pyc
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Python: How to get stdout after running os.system? [duplicate]
...OUT)
to redirect the error output to the default output stream.
If you know that the output is text, add text=True to decode the returned bytes value with the platform default encoding; use encoding="..." instead if that codec is not correct for the data you receive.
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What's the difference between utf8_general_ci and utf8_unicode_ci?
...Unicode 9.0 - and with no equivalent _general variant. People reading this now should probably use one of these newer collations instead of either _unicode or _general. Much of what's written below is not of much interest anymore if you can use one of the newer collations instead.
Key differences
u...
List of installed gems?
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The Gem command is included with Ruby 1.9+ now, and is a standard addition to Ruby pre-1.9.
require 'rubygems'
name = /^/i
dep = Gem::Dependency.new(name, Gem::Requirement.default)
specs = Gem.source_index.search(dep)
puts specs[0..5].map{ |s| "#{s.name} #{s.version...
git mv and only change case of directory
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Thanks. This was driving me crazy. I didn't know about the -A or the --amend option.
– oschrenk
Jun 10 '10 at 5:18
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How do I move forward and backward between commits in git?
...am doing a git bisect and after arriving to the problematic commit, I am now trying to get a step forward/backward to make sure I am in the right one.
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NSNotificationCenter addObserver in Swift
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Thanks! I didn't know how to pass the selector name in Swift.
– Berry Blue
Jun 4 '14 at 23:30
14
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python-pandas and databases like mysql
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frame_query is now deprecated. Now use pd.read_sql(query, db) instead.
– Robert Smith
Apr 24 '15 at 22:43
add a com...